英语词组on the alert是什么意思，短语翻译、用法及例句-英语词组固定搭配大全

词组	on the alert
释义	on the alertadj. phr.Alert; watchful; careful. 警惕的；密切注意的；小心的。◆ Campers must be on the alert for poison ivy and poison oak.野营者必须密切注意气根毒藤和栎叶毒漆树。
随便看	balk at or baulk at or jib at ball game ball of fire ball up baloney baloney) — no matter how thin you slice it banana oil band together bandy around bang one's head against a wall bang up bank on baptism of fire bargain for bargain for or bargain on bargain hunter bargain on barge in bark up the wrong tree bark worse than one's bite barn burner bar the door base on balls basket case bat an eye

英语词组固定搭配大全包含9718条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。